内蒙古民族解放纪念馆坐落在内蒙古自治区诞生地——乌兰浩特市，是为纪念内蒙古自治区成立

非霍奇金淋巴瘤（NHL）的国际预后指标（IPI）包括（）

A.LDH

B.脾受累情况

C.肿物大小

D.临床分期

E.体力状况

如图1所示，某桥梁工程部门在一次工程作业中，利用汽车将重为G，高为h₀的柱形实心铁块，从水深为h₁的河底竖直打捞上来。汽车速度为υ，且保持恒定。水的密度为ρ₀，铁的密度为ρ₁。不计滑轮的摩擦和绳重，不考虑水的阻力和物体排开水的体积对水面高度的影响。请完成下列有关分析和计算。

（1）铁块上升过程中所受浮力的最大值；

（2）推导出自铁块上表面与水面相平升至整体刚露出水面的过程中，绳子的拉力随时间变化的关系式（从铁块上表面与水面相平时开始计时）

（3）在图2中，定性画出铁块自河底升至滑轮处的过程中，绳子拉力的功率P随铁块上升高度h变化关系的图象。

图1                                       图2

筋之余为____，骨之余为____。

(二)

Some spiders hunt on the ground, others build webs to trap their food, but the grass water spider catches its prey by running along the surface of the water.

This special water spider lives on the grassy banks of streams where mosquitoes, damsel flies and other insects come to feed and breed.

Although it is one of the largest spiders in New Zealand, it has an unusual ability. It doesn’t disturb the water as it waits for its meal, and there~ is barely a ripple when it skims across the surface at lightning speed to catch its prey.

Grass water spiders deal swiftly with larger insects like damsel flies by pulling their heads under the water and holding them there until they drown.

After a meal, the grass water spider spends up to half an hour grooming itself. It wipes its eight eyes, brushes its antennae, and takes special care to clean the hairs on its body.

It is the hairs that trap tiny bubbles of air so that the spider can run down a blade of grass and stay underwater for up to an hour when it is frightened. The hairs also keep the spider dry, even underwater.

It is only when the female spider is caring for the young that she does not hunt on the water. After mating, she produces a large egg sac, which she carries around for five weeks. Once the eggs start to hatch, she attaches the sac to some blades of grass or a thistle. She then tears the sac open and releases the tiny spiders into the nursery web.

The writer describes the special spider as "special" because （）.

A．it walks on water

B．it has eight eyes

C．of its hairy appearance

D．of the way it produces its young

简述保罗·克里的生平。